ICSI in Delhi, Cost of ICSI in Delhi, ICSI Treatment Clinic in Delhi. ICSI (Intracytoplasmic sperm injection) is part of assisted reproductive technology used to treat male infertility or sperm related infertility. In ICSI, the experts inject single sperm into the mature egg so as to cause fertilization. The fertilized egg then transferred into the woman’s uterus. ICSI is widely used across the globe under IVF for the treatment of male infertility.